Sure np. It's even more complicated when you didn't build the app. I confused to why I can't get the value. If I set the $_POST['colourcost'] to a value then it's fine but that's not what I want. I want it to be dynamic.Also, the developer did the same thing for another section of items and it works. I've compared the 2 sections and they are both pretty much the same. I'll try and compare it in detail tonight, was getting late last night...